The all-new Alfa Romeo Giulia has been unveiled, at the Alfa museum, on the company's 105th anniversary in range-topping Quadrifoglio trim.

Under the long bonnet, the Alfa Romeo Giulia Quadrifoglio has an aluminium, turbocharged V6 engine designed by Ferrari. With 380kW — possibly 375kW if Alfa is quoting metric horsepower, as it is usually wont to do — of power on hand, the new sports sedan has a claimed 0-100km/h time of just 3.9 seconds.

This makes it more powerful and quicker than the BMW M3, which can do the 0-100km/h run in 4.1 seconds thanks to its 317kW/550Nm twin-turbocharged 3.0-litre straight six. It even bests or equals, on the paper at least, the Mercedes-AMG C63 S Edition, which has a 375kW/700Nm twin-turbocharged 4.0-litre V8 and a 0-100km/h time of 4.0 seconds flat.

Alfa Romeo says that the new Giulia will be available in both rear- and all-wheel drive. It's unclear at this stage whether the Quadrifoglio will be available in both or just one of these configurations.

According to the company, the top-spec model has a weight-to-power ratio of under 3kg per horsepower, meaning that it should tip the scales at under 1530kg. Additionally, it's claimed the new sports sedan has a 50/50 weight distribution across its two axles.

To help keep weight down, the car employs aluminium for its wings, doors, brakes, and parts of the suspension setup, which is double wishbone at the front. On the Quadrifoglio at least, there's also a carbonfibre prop shaft and carbon ceramic disc brakes and carbonfibre shells for the seats.

The new Giulia is available with a number of selectable driving modes, including Dynamic, Natural and Advanced Efficient. High performance models will also be equipped with a Racing mode.

To keep the car going in its intended direction, the Giulia is available with torque vectoring across the rear axle, an active front aero splitter and a "chassis domain control" unit that ties together all the various assistance systems.

In addition, the Giulia is also said to have the longest wheelbase, but one of the shortest bodies, and best torsional rigidity in its class, although the company has yet to supply any figures.

The company has yet to reveal the look of the Giulia's interior, but performance models will be fitted with a steering wheel kitted out with Formula One-style knobs and switches.

Pricing and specifications have yet to be announced. The Giulia is expected to go into production late this year, with sales beginning across Europe and the US during the first quarter of 2016.

We believe that right-hand drive models will start coming on stream from the middle of 2016, with Australian sales slated for either the end of 2016 or the beginning of 2017.

Update: FCA Australia President and CEO Pat Dougherty has confirmed the Alfa Romeo Giulia for Australia, saying: “With a potent blend of performance and style, the Giulia is not just an all-new player in the luxury and sports car segments, but the opening chapter of something truly special for the Alfa Romeo brand globally.

“The Alfa Romeo Giulia takes all the excitement of the 4C and 4C supercars and pairs it with the kind of impeccable design and sophistication only the Italians can deliver. It’s an instant classic, and I can’t wait to welcome it to Australia.”